Wireless power supply system, power transmission device, and power receiving device
US9482723B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2014 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Aug 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power supply system includes a power transmission device capable of transmitting power to a plurality of power receiving devices by a magnetic field resonance method. The power transmission device includes a detection unit configured to detect an amount of charge of each of the plurality of power receiving devices, a determination unit configured to determine, if the amount of charge of a certain power receiving device is not increased even when a predetermined time has elapsed since start of power transmission to the certain power receiving device, whether a cause of failure to increase the amount of charge is the power transmission device or the certain power receiving device, based on the amount of charge of any other power receiving device detected by the detection unit, and a notification unit configured to transmit a notification about the determination result by the determination unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.